Airlines collected record baggage fees in 2012

U.S. airlines collected more than $6 billion in baggage and reservation change fees from passengers last year - the highest amount since the fees became common five years ago.

Passengers shouldn't expect a break anytime soon. Those fees - along with extra charges for boarding early or picking prime seats - have helped return the industry to profitability.

Airlines started charging for a first checked suitcase in 2008 and the fees have climbed since. Airlines typically charge $25 each way for the first checked bag, $35 for the second bag and then various extra amounts for overweight or oversized bags.